Mechanical Metronome for Piano, Guitar, Drums, Bass, Track Tempo and Beat, Pyramid Design, By Creatov&reg; EASY TO USE: Our mechanical metronome is a simply wind it up ! Then you use the pendulum swing to choose your needed beat and tempo and let the pendulum go into motion. Metronomes are great for providing a loud sound to aid you in keeping track of beats and tempo when practicing with various musical instruments. PYRAMID CLASSIC DESIGN: The Creatov comes in the classic design of a sleek black pyramid style. It features a pendulum in the center that completes this classical look that all musicians love. NOT BATTERY OPERATED: Our mechanical metronome is a wind up spring mechanism that gives it the power it needs to create power to produce regular, metrical beats. This metronome is economical and built to last without the required need to spend money on batteries to power it. LARGE SELECTION OF BEATS PER SECOND: With our mechanical metronome our pendulum can make up 40 to 208 beats per minute. The beat selection is 0, 2, 3, 4, 6. You can easily adjust the speed of the beat and tempo when you move the weight up and down the pendulum rod. 100% SATISFACTION GUARANTEED: All Creatov products are built to last. If you ever have any questions we are always more than happy to assist you. We believe in strong customer supporter and our job is not done until you are completely satisfied !